Your mother works to make sure everybody has food to eat, clothes to wear and make sure everyone is healthy. She also does that to make money so she can make her child/children happy.
If the person is a mother, then she already has a child. The reason a mother would have more children is usually because she wants to have a certain amount of children, or if she is adopting, feels...
When two parents work all the time and don't spend enough time with their kids, this makes the kids think working is more important than family and later when the kid grows up, he/she wont listen too...